Ranhofer writes for a brigade that already had cooked beef palates and trotters standing by, so the entry reads as an assembly note rather than a full recipe. Almost all the work sits in the two components it assumes you have.
- The offal must be fully cooked firstBeef palate is the roof of the ox's mouth: it needs blanching, scraping off the tough outer skin, then several hours of gentle braising in an aromatic stock until it yields to a knife. Lamb's trotters take similar treatment and are easiest to bone while still warm. Neither can go into an omelet raw or underdone.
- SourcingBeef palate has vanished from ordinary butcher counters in most of the English-speaking world; a halal or Chinese butcher is the likeliest source, often labelled ox palate. Lamb's trotters are easier to find and give a similar gelatinous bite.
- Bordelaise sauceThe recipe sends you to Ranhofer's No. 436; period bordelaise is generally a red-wine reduction with shallots and brown sauce, often finished with poached marrow. Keep it thick enough to bind the diced meat, or the omelet will leak.
- The diceRanhofer specifies quarter-inch squares. Larger pieces tend to tear the egg as you roll it, and gelatinous meat cut coarse reads as rubbery rather than tender.
- Temperature of the fillingHave the garnish hot in its sauce before the eggs go in the pan. A cold filling stops the omelet setting evenly and forces you to overcook the outside while waiting for the centre.
- QuantityNo amounts are given anywhere in the entry. For a three-egg omelet, roughly 3 tablespoons of diced meat bound in sauce inside, with another 2 to 3 tablespoons of sauce poured around the plate, is the right proportion. Serves one.
Charles Ranhofer ran the kitchen at Delmonico's for over thirty years, and The Epicurean (1894) is essentially his working reference: some thousands of numbered entries, by varying counts, heavily cross-linked, written on the assumption that the reader has stockpots and a larder of prepared components. Beef palate was a standard French garnish of the period, valued for a gelatinous texture between tripe and sweetbread, and it turns up in ragouts, croquettes and vol-au-vents throughout nineteenth-century professional cookery; its disappearance from American kitchens is usually attributed to the general post-war decline of offal. The omelet here is a vehicle, in the same family as the dozens of other filled omelets Ranhofer numbers in sequence, and the pairing with bordelaise, a marrow-enriched red wine sauce also traditionally served with beef, shows how little distance the period saw between egg cookery and the meat side of the kitchen.